Change the size of your server
You change the size of a server by changing its flavor.
Show information about your server, including its size, which is shown as the value of the flavor
property.
$ nova show myCirrosServer
+-------------------------------------+----------------------------------------------------------------+
| Property | Value |
+-------------------------------------+----------------------------------------------------------------+
| status | ACTIVE |
| updated | 2013-07-18T15:08:20Z |
| OS-EXT-STS:task_state | None |
| OS-EXT-SRV-ATTR:host | devstack |
| key_name | None |
| image | cirros-0.3.2-x86_64-uec (397e713c-b95b-4186-ad46-6126863ea0a9) |
| private network | 10.0.0.3 |
| hostId | 6e1e69b71ac9b1e6871f91e2dfc9a9b9ceca0f05db68172a81d45385 |
| OS-EXT-STS:vm_state | active |
| OS-EXT-SRV-ATTR:instance_name | instance-00000005 |
| OS-EXT-SRV-ATTR:hypervisor_hostname | devstack |
| flavor | m1.small (2) |
| id | 84c6e57d-a6b1-44b6-81eb-fcb36afd31b5 |
| security_groups | [{u'name': u'default'}] |
| user_id | 376744b5910b4b4da7d8e6cb483b06a8 |
| name | myCirrosServer |
| created | 2013-07-18T15:07:59Z |
| tenant_id | 66265572db174a7aa66eba661f58eb9e |
| OS-DCF:diskConfig | MANUAL |
| metadata | {u'description': u'Small test image', u'creator': u'joecool'} |
| accessIPv4 | |
| accessIPv6 | |
| progress | 0 |
| OS-EXT-STS:power_state | 1 |
| OS-EXT-AZ:availability_zone | nova |
| config_drive | |
+-------------------------------------+----------------------------------------------------------------+
The size (flavor) of the server is m1.small (2).
List the available flavors with the following command:
$ nova flavor-list
+----+-----------+-----------+------+-----------+------+-------+-------------+-----------+
| ID | Name | Memory_MB | Disk | Ephemeral | Swap | VCPUs | RXTX_Factor | Is_Public |
+----+-----------+-----------+------+-----------+------+-------+-------------+-----------+
| 1 | m1.tiny | 512 | 0 | 0 | | 1 | 1.0 | True |
| 2 | m1.small | 2048 | 20 | 0 | | 1 | 1.0 | True |
| 3 | m1.medium | 4096 | 40 | 0 | | 2 | 1.0 | True |
| 4 | m1.large | 8192 | 80 | 0 | | 4 | 1.0 | True |
| 5 | m1.xlarge | 16384 | 160 | 0 | | 8 | 1.0 | True |
+----+-----------+-----------+------+-----------+------+-------+-------------+-----------+
To resize the server, pass the server ID or name and the new flavor to the nova
resize command. Include the --poll parameter to report the resize
progress.
$ nova resize myCirrosServer 4 --poll
Instance resizing... 100% complete
Finished
Show the status for your server:
$ nova list
+--------------------------------------+----------------+--------+-----------------------------------------+
| ID | Name | Status | Networks |
+--------------------------------------+----------------+--------+-----------------------------------------+
| 84c6e57d-a6b1-44b6-81eb-fcb36afd31b5 | myCirrosServer | RESIZE | private=172.16.101.6, public=10.4.113.6 |
+--------------------------------------+----------------+--------+-----------------------------------------+
When the resize completes, the status becomes VERIFY_RESIZE.
Confirm the resize:
$ nova resize-confirm 84c6e57d-a6b1-44b6-81eb-fcb36afd31b5
The server status becomes ACTIVE.
If the resize fails or does not work as expected, you can
revert the resize:
$ nova resize-revert 84c6e57d-a6b1-44b6-81eb-fcb36afd31b5
The server status becomes ACTIVE.